[rbanffy]

I am an engineer. I frequently do such approximations ;-)

For most uses, like prices of eggs, it's close enough.

[wglb]

So that sounds like a BOEC, no?

[rbanffy]

Envelopes are for sissies ;-)

[wglb]

Well, it is true that probably 100% of my BOEC calculations are done entirely without the use of a physical envelope, so I couldn't disagree with you.

[rbanffy]

Since the arrival of e-mail, I keep my envelopes in the same drawer as my slide rules.

[wglb]

Agreed.

However, I do keep one non-virtual slide rule around just to whip out and show the kids now and then. Nice mahogony base, teflon slide, the works.